Q 01/05

The Chihuahua holds what distinction among recognised dog breeds?

A) It is the oldest in the world

B) It is the longest-lived

C) It is the most popular

D) It is the smallest in the world

Answer · why

D) It is the smallest in the world

It is a Mexican toy breed kept almost entirely as a companion animal.

Q 02/05

The Chihuahua breed originates in which country?

A) Spain

B) Peru

C) Cuba

D) Mexico

Answer · why

D) Mexico

It is named after the largest Mexican state, where 19th-century visitors found the dogs plentiful.

Q 03/05

A 2020 genome study found roughly what share of Chihuahua ancestry comes from pre-colonial American dogs?

A) About 25%

B) About 50%

C) About 4%

D) About 70%

Answer · why

C) About 4%

That small trace still sets it apart from most modern breeds, which are almost entirely European; a 2013 study had guessed as high as 70 per cent.

Q 04/05

Which other Mexican breed shares the Chihuahua's trace of pre-colonial dog ancestry?

A) Chinese Crested

B) Xoloitzcuintli

C) Peruvian Inca Orchid

D) Havanese

Answer · why

B) Xoloitzcuintli

The hairless Xolo carries about 3 per cent, and the two are the only modern breeds found to retain any at all.

Q 05/05

DNA studies suggest native American dogs entered North America from where, roughly 10,000 years ago?

A) Polynesia

B) Western Europe

C) West Africa

D) Siberia

Answer · why

D) Siberia

They were then isolated for about 9,000 years until Europeans arrived, and their genetic signature is now nearly extinct.